I have migrated my liferay 5.2 EXT environment to liferay 6 EXT plugin, when I try to access my portlets it gives the following exception:

org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here at org.springframework.orm.hibernate3.SpringSessionContext.currentSession(SpringSessionContext.java:63) at org.hibernate.impl.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:695) at com.liferay.portal.dao.orm.hibernate.SessionFactoryImpl.openSession(SessionFactoryImpl.java:61) at com.liferay.portal.service.persistence.impl.BasePersistenceImpl.openSession(BasePersistenceImpl.java:164) at com.ext.portlet.tips.service.persistence.TipsEntryPersistenceImpl.findWithDynamicQuery(TipsEntryPersistenceImpl.java:708) at com.ext.portlet.tips.service.base.TipsEntryLocalServiceBaseImpl.dynamicQuery(TipsEntryLocalServiceBaseImpl.java:48) at com.ext.portlet.tips.service.TipsEntryLocalServiceUtil.dynamicQuery(TipsEntryLocalServiceUtil.java:67) at com.ext.portlet.tips.TipsLocalServiceUtil.getRecent(TipsLocalServiceUtil.java:50) at com.ext.portlet.tips.action.ViewAction.render(ViewAction.java:29) at com.liferay.portal.struts.PortletAction.execute(PortletAction.java:105) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at com.liferay.portal.struts.PortletRequestProcessor.processActionPerform(PortletRequestProcessor.java:324) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at com.liferay.portal.struts.PortletRequestProcessor.process(PortletRequestProcessor.java:225) at com.liferay.portlet.StrutsPortlet.include(StrutsPortlet.java:252) at com.liferay.portlet.StrutsPortlet.doView(StrutsPortlet.java:147) at com.liferay.portal.kernel.portlet.LiferayPortlet.doDispatch(LiferayPortlet.java:203) at javax.portlet.GenericPortlet.render(GenericPortlet.java:233) at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:103) at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:66) at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:644) at com.liferay.portlet.InvokerPortletImpl.invokeRender(InvokerPortletImpl.java:713) at com.liferay.portlet.InvokerPortletImpl.render(InvokerPortletImpl.java:426) at org.apache.jsp.html.portal.render_005fportlet_jsp._jspService(render_005fportlet_jsp.java:1438) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488) at com.liferay.portal.util.PortalImpl.renderPortlet(PortalImpl.java:3616) at com.liferay.portal.util.PortalUtil.renderPortlet(PortalUtil.java:1110) at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processPortlet(RuntimePortletUtil.java:162) at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processPortlet(RuntimePortletUtil.java:96) at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processTemplate(RuntimePortletUtil.java:261) at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processTemplate(RuntimePortletUtil.java:183) at org.apache.jsp.html.portal.layout.view.portlet_jsp._jspService(portlet_jsp.java:821) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488) at com.liferay.portal.action.LayoutAction.includeLayoutContent(LayoutAction.java:342) at com.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:599) at com.liferay.portal.action.LayoutAction.execute(LayoutAction.java:219) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:154) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at com.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:504) at com.liferay.portal.servlet.MainServlet.service(MainServlet.java:481) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:109) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:109) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.strip.StripFilter.processFilter(StripFilter.java:303) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.themepreview.ThemePreviewFilter.processFilter(ThemePreviewFilter.java:90) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:139) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:254) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at com.liferay.portal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:135) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:109) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:109) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.strip.StripFilter.processFilter(StripFilter.java:248) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.themepreview.ThemePreviewFilter.processFilter(ThemePreviewFilter.java:90) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:128) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.i18n.I18nFilter.processFilter(I18nFilter.java:223) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:109) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:109) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.etag.ETagFilter.processFilter(ETagFilter.java:47) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:254) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.sso.ntlm.NtlmPostFilter.processFilter(NtlmPostFilter.java:83) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.sharepoint.SharepointFilter.processFilter(SharepointFilter.java:181) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:243) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:109) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:109) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:179) at com.liferay.portal.servlet.filters.threadlocal.ThreadLocalFilter.processFilter(ThreadLocalFilter.java:37) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:465) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:619)

There is some change in localServiceImpl classes referring persistence beans

like in 5.2.3 it was @BeanReference(name = XYZ)But in 6.0.5 they are using @BeanReference(type = XYZPersistence.class)So here you have to be careful about defining beans in portlet-spring.xml and put id of the bean as full qualified name of the Interface otherwise it wont find that..